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How much work is done when a 48-kg stack of books are lifted 2m with a net force of 25 N ? A. 12.4 J B. 100 J C. 50 J D. 96 J ...?
answered
Oct 18, 2017
Physics
high-school
4
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218k
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What are the chemical elements necessary for life?
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Jun 14, 2017
Biology
high-school
2
votes
149k
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Why did the United States take military action against the Taliban?
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Sep 10, 2016
History
high-school
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85.1k
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